Definition of autunite in English:

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Pronunciation: /ôˈtənīt/ /ˈôtnˌīt/


A yellow or pale green mineral occurring as square crystals that fluoresce in ultraviolet light. It is a hydrated phosphate of calcium and uranium.
Example sentences
  • An important historical summary of autunite and other uranium mineral occurrences in the northeastern states can be found in Cooper.
  • Excellent pale yellow groups of autunite crystals to 1 cm occur in joints cutting sandstone at Novoveska Huta, Slovakia.
  • Northrop lists several New Mexico localities at which ‘museum-quality’ specimens of autunite have been found.


Mid 19th century: from Autun, the name of a town in eastern France, + -ite1.

For editors and proofreaders

Syllabification: au·tun·ite

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